/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/CollisionConvexMesh.h
When encountering a triangle or quad in hull generation (3-points or 4 coplanar points) we will instead generate a prism with a small thickness to emulate the desired result as a hull. Otherwise hull generation will fail on these cases. Verbose logging on LogChaos will point out when this path is taken for further scrutiny about the geometry
namespace Chaos { static constexpr [FRealSingle](API\Runtime\ChaosCore\Chaos\FRealSingle) Chaos::TriQuadPrismInflation() }